Home / 156,126,411.50-215,459,171.79-86,505,278.54

Finding the Fourth Proportional to 156,126,411.50, 215,459,171.79 and 86,505,278.54

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Solution

The fourth proportional to 156,126,411.50, 215,459,171.79 and 86,505,278.54 is: 119,379,901.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,126,411.50 : 215,459,171.79 = 86,505,278.54 : x
  2. Step 2: Convert to fraction form
    156,126,411.50/215,459,171.79 = 86,505,278.54/x
  3. Step 3: Cross multiply
    156,126,411.50x = 215,459,171.79 × 86,505,278.54
  4. Step 4: Simplify right side
    156,126,411.50x = 18,638,355,669,691,660
  5. Step 5: Solve for x
    x = 18,638,355,669,691,660/156,126,411.50
  6. Step 6: Final answer
    x = 119,379,901.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.